Understanding the Dynamic Behavior of Unconventional Horizontal Wells - A Blend of Physics and Data-Based Workflow for the Artificial Lift Life Cycle

2020 ◽  
Author(s):  
Subash K Kannan ◽  
Kreg Flowers ◽  
Brent Vangolen
Keyword(s):  
Life Cycle ◽  
Dynamic Behavior ◽  
Horizontal Wells ◽  
Artificial Lift

Against the Grain: Three Proppant Delivery Approaches That Buck the Status Quo

2021 ◽  
Vol 73 (01) ◽  
pp. 28-31
Author(s):  
Trent Jacobs
Keyword(s):  
Open Fracture ◽  
Horizontal Wells ◽  
Field Studies ◽  
Technical Conference ◽  
Oil Field ◽  
Permian Basin ◽  
Artificial Lift ◽  
Fracture Area ◽  
The Status ◽  
Conventional Oil

Pumping proppant down a wellbore is the easy part. Ensuring that the precious material does its job is another matter. A trio of field studies recently presented at the 2020 SPE Annual Technical Conference and Exhibition (ATCE) highlight in different ways how emerging technology and old-fashioned problem solving are moving the industry needle on proppant and conductivity control. These examples include the adoption of unconventional completion techniques in a conventional oil field in Russia and work to validate the use of small amounts of ceramic proppant in North Dakota’s tight-oil formations. Both studies seek to counter widely held assumptions about proppant conductivity. A third study details a recently developed chemical coating that Permian Basin producers are applying “on the fly” to sand before it is pumped downhole. The new adhesive material has found a niche in helping operators mitigate the amount of sand that returns to surface during flowback, a sectorwide issue that drives up completion costs and later may spell trouble for artificial lift systems. Disproving “The Overflush Paradigm” After conventional reservoirs are hydraulically fractured, both from vertical and horizontal wells, it has been standard practice for decades to treat the newly propped perforations with a gentle touch. The approach to this end is known as underflushing. When underflushing, the goal is to leave behind just a few barrels’ worth of proppant-laden slurry over the perforations before attempting to complete further stages. The motivation for this boils down to the need for an insurance policy against displacing the near-wellbore proppant pack and causing the open fracture face to pinch off before it ever has a chance to transmit hydrocarbons. Such carefulness comes at a price. Underflushing raises the risk of needing a cleanout before oil can flow optimally to surface. This not only delays the arrival of first oil, it means extra equipment and personnel are required. However, a more glaring downside to underflushing is that it appears to be an unnecessary precaution. The near-wellbore fracture area is, in fact, more robust than what conventional wisdom allows credit for.

Price Elasticity Dynamics over the Adoption Life Cycle

1992 ◽  
Vol 29 (3) ◽  
pp. 358-367 ◽  
Author(s):  
Philip M. Parker
Keyword(s):  
Life Cycle ◽  
Diffusion Process ◽  
Dynamic Behavior ◽  
Empirical Research ◽  
Price Elasticity ◽  
Product Life Cycle ◽  
Product Life ◽  
Empirical Results

Little empirical research has been conducted to test the dynamic behavior of elasticities over the product life cycle. Competing specifications of price elasticity dynamics are examined to test the prevailing hypothesis that elasticities increase over the adoption life cycle or diffusion process. Though not supporting the hypothesis, the empirical results suggest that certain factors, including the degree to which a product is a necessity and faces competitive substitutes, affect elasticity dynamics.

An Intelligent Completion and Artificial Lift Technology to Develop Large Carbonate Reservoirs: Novel Completion and Zonal Water Injection via Remote Control Methods to Develop Horizontal Wells

2021 ◽  
Author(s):  
Jin Fu ◽  
Xi Wang ◽  
Guobin Yang ◽  
Shunyuan Zhang ◽  
Chen Chen ◽  
...  
Keyword(s):  
Remote Control ◽  
Data Collection ◽  
Water Adsorption ◽  
Water Injection ◽  
Horizontal Wells ◽  
Carbonate Reservoirs ◽  
Control Methods ◽  
Vertical Wells ◽  
Horizontal Drilling ◽  
Artificial Lift

Abstract There are several large carbonate reservoirs that have drawn great attention of researchers in recent years. After optimization of drilling technologies, how to deploy artificial lift technologies to develop them more efficiently is another concern. Conventional zonal water injection technologies require repetitive operation with wirelines and cables, causing extensive tests and low efficiency. However, an intelligent zonal water injection string consisting of several preset cable packers, water injection pressure gauges, formation pressure gauges and downhole flow meters has simply optimized water injection parameters and efficiently developed all reservoirs in some China's mature oilfields, especially when the string is integrated with remote monitoring and control methodologies. With the rapid development of horizontal drilling and extended reach well drilling technologies, borehole conditions are becoming more and more complicated, which has brought more challenges to water adsorption testing of horizontal intervals and deployment of zonal water injection instruments. Compared with vertical wells, the water adsorption test and string running are more challenging for horizontal wells, in which we are faced by many a problem during zonal water injection, such as competitive slack off and tight pull, excessive or inadequate water injection, complicated operation process. Besides, well deviation, dog leg and horizontal section length shall be all taken into consideration during zonal water injection for horizontal wells. Therefore, novel strings and tools should be deployed. Now tight pull, slack off and long operation periods are common problems during zonal water injection of horizontal intervals. After dedicated research, a set of wireless intelligent water injection strings for horizontal wells has been invented. Based on pressure pulse water distribution technique, the water injection string is eligible for 32-stage adjustment, so one strip may accomplish testing, adjusting, injection, measurement and downhole data collection, in addition to automatic error correction during water injection. The field trial shows that this novel string may be tripped in and out smoothly, packers are set securely and released easily, in order to adjust opening of each water injection nozzle in the ground, with an error of no more than ±10%. Therefore, the novel completion and water zonal water injection string is capable of injecting water precisely via remote control methods. The wireless intelligent water injection string for horizontal wells that combines testing, adjusting, injection, measuring and data collection in one trip provides us with many downhole data, such as pressure, flow rate, temperature and so on. Therefore, water injection volume for each zone is monitored and controlled down hole. This technology is applicable for both horizontal and vertical wells that require zonal water injection.

Evaluating Tailpipe Systems Designed to Optimize Artificial Lift Performance in Horizontal Wells

2018 ◽  
Author(s):  
C. R. Humphreys ◽  
B. N. Vangolen ◽  
A. P. Allison ◽  
D. Yin ◽  
C. Yicon
Keyword(s):  
Horizontal Wells ◽  
Artificial Lift
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